h1{
    text-align: center;
}
.brief p{
    text-align: center;
}
.topic{
    color: steelblue;
}
h2{
    color: steelblue;
}
.edutime{
    float: left;
    text-align: left;
}
.eduplace{
    float: right;
    text-align: right;
}